The Internet of Things is a highly integrated and integrated application of information technology that can better meet the needs of people’s development. With the popularity of the Internet of Things, the number of Internet of Things devices has increased, and the communication between devices and devices has become more complicated. Because the Internet of Things has some common problems with the Internet, a more effective, secure and trusted IoT platform has become the focus of many research scholars. Blockchain, as a decentralized, non-tamperable and highly credible technology, fits well with the development trend of networking. Identity authentication is an important part of the service architecture and can effectively solve the security in the Internet of Things. Hidden dangers. Therefore, in view of the low efficiency and lack of security in the traditional IoT server architecture, this paper proposes a blockchain-based networked identity authentication system. Firstly, according to the characteristics of the blockchain, the key technologies of the blockchain are briefly explained. Then, the overall design scheme design, the user end system design and the equipment end system design of the identity authentication system. Finally, the experimental platform is built, and the functional testing of the blockchain platform, device and client is carried out respectively The throughput of the system is obtained by the block rate and the outbound time of the blockchain under the condition of the privacy blockchain. The memory usage and the corresponding traffic consumption during the process of creating the wallet and data upload are analyzed to verify the stability of the system and to verify the rationality of the IoT identity authentication system based on the blockchain.

物联网是信息技术的高度集成和集成的应用程序，可以更好地满足人们发展的需求。随着物联网的普及，物联网设备的数量增加，并且设备与设备之间的通信变得更加复杂。由于物联网与互联网存在一些共同的问题，因此更加有效，安全和可信赖的物联网平台已成为许多研究学者关注的焦点。区块链作为一种去中心化，不可篡改且高度可信的技术，非常适合网络的发展趋势。身份认证是服务体系结构的重要组成部分，可以有效解决物联网中的安全问题。隐藏的危险。因此，针对传统物联网服务器架构效率低下，缺乏安全性的问题，提出了一种基于区块链的网络身份认证系统。首先根据区块链的特点，简要介绍了区块链的关键技术。然后，进行身份认证系统的总体设计方案设计，用户端系统设计和设备端系统设计。最后搭建实验平台，分别对区块链平台，设备和客户端进行功能测试，在隐私区块链条件下，通过区块链的区块率和出站时间获得系统的吞吐量。